Ok I just went from the pdx 1.600 to the m1000 the amp is pushing 2 type Rs at 2 ohms they are the newest ones so they are like 600 rms each now I noticed a big difference in the amps the digital amp sounds very good but doesn't seem as full as the m1000. That said can anybody tell me how to adjust the settings so that its as loud as possible without harming anything? Plus anybody know what I should do for powering the amp so my car runs normal when I'm listening to it?